choir vs chorale

choir

• The part of a church where the choir assembles for song. 

• A group of people who sing together; a company of people who are trained to sing together. 

• One of the nine ranks or orders of angels. 

• Set of strings (one per note) for a harpsichord. 

• To sing in concert. 

chorale

• A chorus or choir. 

• A form of Lutheran or Protestant hymn tune.